User-Defined Functions (UDFs) in Spark — Roadmap Step & Resources

When and how to extend Spark SQL with custom logic

Level: beginner
Estimated time: 1 days
Roadmap: Big Data Processing & Lakehouse Engineering

Before this step

Spark SQL Fundamentals

Study resources

Apache Spark Documentation (Article) — Official documentation for Apache Spark, covering core concepts, SQL, and structured streaming. Background reading/viewing for: User-Defined Functions (UDFs) in Spark.

Part of

Spark SQL and DataFrames — section
Big Data Processing & Lakehouse Engineering roadmap — the full learning path

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